Differentiate and re-integration of image
Fused gradient field
I found \(\sigma=35, \tau_s=0.85\) to give desirable results.
Gradient field \(\nabla \alpha\)
Gradient field \(\nabla \phi^\prime\)
Gradient field \(\nabla \phi^\star\)
Weights
Final fused image
Different initializations did not effect the outcome image that much, but the boundary conditions do. I found the average of the ambient and flash image to give best results.
Gradient domain fusion on my own images
